Improvement in blow-offs for steam-boilers



B. C. NYE

Blow-Off for Steam-Boilers.

Patented De c.10,1872.

, 4M. PHUrmL/THMRAPHIC C0.MX(0SBORNE'S Prracrss) UNITED I STATES PATENTOFFICE.

BUGKINGHAM o. NYE, OF POMEROY, OHIO, AssIeEoE .ro HIMSELF Ann JAMES N.WILLIAMSON, OF SAME PLACE.

IMPROVEMENT IN BLOW-OFFS FOR STEAM-BOILERS.

Specification forming part of Letters Patent No. 133,881., datedDecember 10, 1872.

" To all whom it may concern:

Be it known that I, BUGKINGHAM G. N YE,

, of Pomeroy, in the county of Meigs and State of Ohio, have invented aBlow-O11 for Steam- Boilers, of which the following is a specification:

The invention relates to that part of a boiler which is immediatelyabove the fire, which is accustomed to become covered with scale andsediment, and which is thereby rendered liable to rapid oxidation, todiminution in strength, and to the production of explo- B ODS:

' The usual construction of a horizontal blowoh pipe is to formperforations in the bottom or under side, and connect. it with avertical or other discharge-pipeat one of its ends. The disadvantages ofthis'plan are, chiefly, the liability of the perforations to becomeclogged and the short distance from the dischargepipeproper'forwhiehtlle sediment or scale is affected. 3

My invention has forits object torcmedy the defects of suchconstruction.

Figure lis a longitudinal section. Fig. 2 is afront view. Y

A represents a boiler; B, the fire-space; O, return-fines; and D, thatpart of boiler where the collection of scale and sediment is liableto'promote oxidation and explosion. E E are two pipes, closed at oneend, externally threaded at the other, and each having a slot, e, nearlyits full length. These are screwed into a T-pipe, F, so that the slots 00 shall be in line with a bottom slot, f, of the said T-pipe.

G is a pipe having a shut-off cock, g, connecting with the T-pipe at g,and'extending to some point outside the boiler, where it discharges.When the cock gis turned oifno egress is allowed to the water, but whenturned on the pressure of the steam upon the water forces a currentthereof up through each aperture or the bottom of pipes.

Itis evident that the continuous slots e ofi'er no obstruction upon oraround which mud'or other sediment can collect so as to clog or inanyway impede the passage of the water through the pipes E. It isequally apparent that there is no danger of clogging at the junction ofsaid pipes with the pipe'F, owing to the force of the current at thatpoint at 'each discharge. Observation and reflection are alikeconfirmatory of the fact that the influence of the current which can beinduced at anytime through a vertical discharge-pipe, must be within avery short radius. Hence extension of the horizontal perforated pipebeyond such radius must be useless. In my invention I have connected thevertical discharge-pipe at the center of the. horizontal slotted pipe,so that the radius of the circle in which an upward current can beestablished is, theoretically, doubled, and nearly so in' practice; butto facilitate the action of a current is the function of the continuousslots, since the sediment, once carried upward into the pipes E, willtravel along in the same till forced up into the vertical discharge-pipeG.

If a series of perforations were used instead,

each would form the center of a vortex which would disturb the sedimentwithin its own range only; thus a series of vortices would beestablished,efi'ectin g a considerable commotion or distuibance in thewater, but not causing a uniform action--i. 0., broad, unbrokenlatefal-currents-as in the case of the continuous s ots.

Therefore, while disclaiming, as foreign to my invention, the use ofperforated pipes,

I do claim as new, and an improvement in blowpfis for steam-boilers Thehorizontal pipes E provided with the continuous slots 6 e, incombination with the pipe F f and vertical discharge-pipe G, said partsbeing connected so as-to form an equalarmed T, as shown and described,for the purpose specified.

' BUGKINGHAM O. NYE.

Witnesses DEL. F. STONE, WILLIAM L. ANDERSON.

